Purchased this amp yesterday for $160.00 including tax locally. Swapped out my pos Profile and put this thing in today. Noticed it doesn't have mounting holes...no big deal. It's a fairly big amp for a 4ch...draws 80A. After I set everything up and the gains to match my h/u voltage, the sound at a given volume was much lower than it was with the profile. So i just redid the eq, everything sounds great. Now when it's at say Volume 17, the profile was that loud at 10. I prefer it being higher because it gives a lot more headroom. Anyways, big improvement over the profile. Install was a snap, only thing is I wish we could mount these things (unless I just don't know how).